Improvement in knuckle-couplings for tumbling-shafts



u. n; HERRICK. Knuckle-Coupling for Tumbling-Shafts. No. 165,23]` Patented July 6,1875.

` WITNESSES INV NTOR @MQ/ML @MM/7 M ATTOIRNEYS 2 Sheets--Shet 2. A

"uivirri-:n` STATES PATENT. -Orrrcn OSCAR D. HERRIGK, OF OTTUMWA, IOWA.

IMPROVEMENT INl KNUCKLE-COUPLINGS FOR TUMBLlNG-SHAFTS.

Specification forming partof Letters Patent No. 165,231, dated J u ly', 1875; application lecll May l, 1875.

To all whom it may concern:

Be it known that I, OSCAR D. HERRroK, of

Ottumwa, in the county of Wapello and State of Iowa, have invented a new and'valuable Improvement in Knuckle-Coupling for Tumbling-Shafts 5 and I do hereby declarethat the following is a full, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part of this specification, and

to the letters and figures of reference marked thereon.

Figure l of the drawings is a representation of a plan View of my device, and Fig. 2 is a longitudinal .central sectional view of the same. Fig. 3 is a perspective view, and Figs. et and 5 are outsideplan views. Fig. 6 is a detail view.

This invention has relation to improve'- ments in tumbling rods or shat'ts,`whereby motion is transferred from a horsepower to a separating or other machine.

The object of the invention is, first, to devise a joint for such rods which shall be of such a nature as to allow the rods to fold over upon each other, thus allowing them to be putin compact shape for transportation; and, secondly, to provide a cover, within which the said shaft will revolve, which' will be capable of being folded over with the tumbling-shaft without being detached therefrom,

as will be fully understood from, and claimed in, the following` specification.

In the annexed drawings, A designates a coupling-box, consisting of a strong annulus` i blocks B, will be communicated to a second rod, socketed in the other block, and the said rods will be allowed to fold inward upon each other through the medium of the pivotal blocks B; and rods A being permanentlybut detachably secured into their sockets by means of a screw, s, the entire tumbling-shaft, which may be made up of any number of rods, is thus made capable of being folded-up into compact form for transportation. Y

By this mea-ns the lossof time and expense incurred in taking apart and joining together the various sections of tumbling-shaft are et'- fectually obviated.

E represents a tubular metal sheathing, in-

4closing each section of tumbling-shaft, which sheathing is provided at each end with an interior annulus, f, upon which the said rod finds its bearings, and an* enlargement or swell, g, in the form of one-halt' the frustum of a cone, within which the ends of the coupling-block are adapted to be received and rotate. Rods A are prevented from endwise displacement, relative to their sheathings, by means of shoulders e formed thereon, behind annulusf; and in order that the said rods may be placed therein, the y'sald sjieathings maybe made sectional, the said sections being longitudinal, and hinged together, and then united by means of a catch, h, on one section, which is engaged over a pin, t', on the other.

The enlargements g being only applied over one-halt' the periphery of these sheathings, they will interpose no obstacle to the folding of the sections of tumbling-shaft, while at the same time they will cover every part of coupling box or joint of the said rods, as shown in Fig. 3, when the said shaft is in use, thereby eiectually preventing their joint from catching the clothing of the operators.

To fold the shaft, contiguous sections are drawn outwarn from each other, and socketblocks B having endwise movement in coupling A, coverings g will be separated, allowing the said blocksto-vibrate freely in the couplings, and the sections to be folded the one upon the other, presenting the appearance shown in Fig. 2, when they may be tied'up, and thus itted for transportation.

What I claim as new, and desire to secure by Letters Patent, is

l. The combination of the sectional sheathing E with a sectional and folding tumbling- In testimony that I claim the above I haveshaft, substantially as specified. hereunto subscribed my name in the presence 2. The sectional metallic sheathing E, havof two Witnesses. ing bearing-rin gs f and swells or enlargements OSCAR D. HERRIOK. g in the form ofhalf a conical frustum, afdapted Witnesses: f for use in connection with a folding sectional WM. TORNLEY, tumbling-shaft7 substantially as specied. l l WVM. POWELL. 

